Wireless explainer - transmitter, mainly transmits voice content through the device, and the receiver can realize one person explaining and multiple people listening on the same channel as the receiver. The 2.4G frequency band used has strong anti-interference ability, high confidentiality and multiple channels. Basic information such as channel numbers and signals are displayed on the oled screen. With buttons and knobs, the product is easy to operate and beautiful.Support - key pairing, saving the time of pairing multiple transmitters one by one One-way one-to-many explanation 2.4G international common frequency band The transmission distance is long, and the barrier-free distance is 100-150 meters OLED high-definition wide-angle displayreceiver:1. 2.4G international common frequency band 2. The transmission distance is long, and the barrier-free distance is 100-150 meters 3. OLED high-definition wide-angle display.Working temperature: 55-125Call distance: 100-150m barrier-free distanceNumber of channels: 35Frequency: 2.4GHzBattery capacity: 1000mAhCharging interface: DC5V 1A (Type-C)The wireless interpreter-receiver is mainly used to receive content transmitted by the transmitter. It uses the 2.4G frequency band, which has strong anti-interference ability, high confidentiality, and multiple channels. There are many scenarios supported, such as tour guide explanation, corporate reception, wireless conference, factory explanation, wireless teaching and other -scale multi-person scenarios.Colour:WhiteMaterial:ABSPackage Contents:1 x Transmitter1 x Type-c charging cable1 x Receiver1 x Headphone1 x Lanyard1 x Chinese and English manualOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.